494148172840 has 256 divisors, whose sum is σ = 1345849344000. Its totient is φ = 159733002240.

The previous prime is 494148172823. The next prime is 494148172853. The reversal of 494148172840 is 48271841494.

It is a super-2 number, since 2×494148172840² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57865291 + ... + 57873829.

It is an arithmetic number, because the mean of its divisors is an integer number (5257224000).

Almost surely, 2^494148172840 is an apocalyptic number.

494148172840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494148172840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672924672000).

494148172840 is an abundant number, since it is smaller than the sum of its proper divisors (851701171160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494148172840 is a wasteful number, since it uses less digits than its factorization.

494148172840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8756 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 494148172840 in words is "four hundred ninety-four billion, one hundred forty-eight million, one hundred seventy-two thousand, eight hundred forty".